I would love to see how much the ECM is trying to intervene with the knocking events. On my data, I can see the "Knock Intensity" and then when the ECM actually does something by retarding the knock. A high knock intensity doesn't always correlate to a knocking event--which is interesting. Upon my research, the HD says a knocking event is severe enough when it has to pull back over 2 - 3 degrees of timing. The ECM is able to adjust timing in 0.25 degree increments.

From personal experience, I found that simply adjusting the AFR tables will have a DRASTIC effect barring all other parameters. For instance, I changed only my 100 kPa column from 12.4:1 AFR to 12.8:1 AFR, and my bike hated it without adjusting the spark tables. In no-way was I able to even hear this happening at WOT, but with data I was able to see the event happen once I reviewed it.

I'm going to try and find more information on this as I'm curious of the strategy.
* Knock Intensity
* Knock Event Counter
* Knock Retard

 

FM is johnny on the spot. New tune just in. Will load tomorrow morning when I’m home and road test if it’s not raining.

And let me say, my mission in this thread has been to ID what else this could be beyond a tune issue. FM has been very responsive.

 

Good question. Just out of curiosity, what spark plugs are you running? And did you check for any intake and/or exhaust leaks? I'm wondering what else could be contributing.

Also, any note from FM in regards to where they are seeing the knock at and how much?

 

Fuel Moto was quick to respond as mentioned and has confirmed my suspicion that I must have something else going on. They fine tuned the Map, I loaded it and did a few blasts up and down the highway.

Maybe a tear down and a Stage III is on the horizon.

An old man has to have something to do in winter, right?

 

Bore scope your cylinders. Could be carbon buildup on pistons. A few folks have had some pretty severe carbon buildup on M8’s without high mileage.

 

What else do They think is going on? What else can cause a pinging? I have a 114 that started pinging at 12000 miles.I now have 20000 miles and it pings on a windy day. Any load on the engine cause consistent pinging. I have a street tuner and have retarded spark 3 degrees from 2000 to 3000 rpm.This has helped,but I had a 107 with 18000 miles that never pinged.

 

Bike has done this since new.

 

Based on what they saw in the tune there was nothing happening too far out of line that the ecm couldn’t handle. They were surprised I could hear whatever knock events were occurring.

 

Oil lowers octane. A lot of breather mist can cause it.

 

I mentioned a few posts earlier that I think I must have something else going on with the bike, because what FM is seeing in the logs and what I am hearing must be two different things, which is why I posted this thread.

I think FM has done their part. I need to figure out what this noise is, because the logs suggest I shouldn’t be hearing detonation.

Just for everyone’s edification regarding the tune, here are the tuner’s comments about the logs.

“ I have made some adjustments to your tune based off your descriptions as well as the log data. While there is some knock retard activity in your logs, it’s not overly concerning and it’s what we would generally consider fairly normal. This is also well within the ECM’s ability to adjust, and at this level I wouldn’t expect the knock to be audible. Please give this tune a try and let us know if it resolves the sound, we’re happy to assist with additional troubleshooting.”